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| Hybrid graphene album with polysulfides adsorption layer for Li-S batteries | |
| Hong, Xiaodong; Liang, Ji; Tang, Xiaonan; Yang, Huicong; Li, Feng | |
| 2019-02-02 | |
| Source Publication | CHEMICAL ENGINEERING SCIENCE
 |
| ISSN | 0009-2509 |
| Volume | 194Pages:148-155 |
| Abstract | Lithium-sulfur (Li-S) battery is a promising candidate for the next-generation power sources due to their low-cost and high energy density. However, the shuttle effect of the dissolved polysulfides in the electrolyte solvents has hindered the commercialization of Li-S batteries. In order to effectively suppress the shuttle effect, we design and prepare a bybrid graphene album structure as an efficient polysulfides-trapped host for Li-S battery. In this composite, the graphene album structure is stacked by graphene layer by layer through a bottom-up assembly, which provides a hierarchical porous structure, easy mass transport and excellent conductivity for the cathode host of Li-S batteries. The uniform g-C3N4 layer was in-situ generated on each graphene by hydrothermal treatment and heat polycondensation. The orderly bybrid graphene album (coded as g-C3N4@n-G) achieves the two-dimensional surface adsorption interaction for imobilizing soluble polysulfides, and the multilayer barriers also effectively prevent the escape of polysulfides to enhance the long cycling stability of Li-S batteries. As a result, an extremely low capacity decay of 0.028% cycle(-1) and a high initial capacity of 1252 mA h g(-1) have been achieved at 0.2 C. Furthermore, this kind of unique design and preparation method for hybrid graphene album also opens an opportunity for the construction of other album-like graphene-based hybrids. (C) 2018 Elsevier Ltd. All rights reserved. |
| Keyword | Graphitic carbon nitride Graphene album Self-assembly Lithium-sulfur battery |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000451917900020 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/81385 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Hong, Xiaodong,Liang, Ji,Tang, Xiaonan,et al. Hybrid graphene album with polysulfides adsorption layer for Li-S batteries[J]. CHEMICAL ENGINEERING SCIENCE,2019,194:148-155. |
| APA | Hong, Xiaodong,Liang, Ji,Tang, Xiaonan,Yang, Huicong,&Li, Feng.(2019).Hybrid graphene album with polysulfides adsorption layer for Li-S batteries.CHEMICAL ENGINEERING SCIENCE,194,148-155. |
| MLA | Hong, Xiaodong,et al."Hybrid graphene album with polysulfides adsorption layer for Li-S batteries".CHEMICAL ENGINEERING SCIENCE 194(2019):148-155. |
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